Someone who pretends to be your friend in the hopes that they can eventuallymanipulate your friendly attachment to them into a romantic relationship
"Bob keeps pretending to be friends with girls, then passive-aggressively trying to guilt them into dating him because he's such a Nice Guy. He's a real friendzone predator."
A particularly aggravating metaphorical place, that people end up in when someone they are interested in only wants to be friends. It is impossible to get over someone while in the friendzone, because, as friends, you still see them too often for them to be erased from your memory, and yet, you cannot be with them the way you want.
Person 1: Hypothetically, how would you react if I told you I like you?
Person 2: I'm sorry, I don't mean to hurt you, but I want to just be friends.
Person 1 is now in the friendzone.
1) A man who goes above and beyond attempting to win the affection of someone they are attracted to but gets but in the friendzone anyway. Ser Friendzone is usually less self aware than the fabled White Kinght.
2) Ser Jorah Mormont from George RR Martin's Game of Thrones book series.
A friend who is a boy but deliberately not a boyfriend because you want no emotional attachments or jealousy issues if you feel like kissing other people.
-Hey Kate I saw you kissing some boy at a party. I though you had a boyfriend...
-He's not my boyfriend he is my friendboy, therefore we are free to share our love amongst other people providing we don't do it in front of eachother and that we don't get off with each other's friends.